@font-face {
    font-family: "FactorioFont";
    src: url("https://fonts.cdnfonts.com/s/19687/PressStart2P-Regular.woff") format("woff");
}

:root {
    --factorio-dark: #1a1a1a;
    --factorio-dark-alt: #242424;
    --factorio-primary: #f29f05;
    --factorio-secondary: #a8a8a8;
    --factorio-accent: #0a0a0a;
    --factorio-border: #444;
    --factorio-text: #e0e0e0;
}

* {
    box-sizing: border-box;
}

body {
    font-family: "FactorioFont", monospace;
    background-color: var(--factorio-dark);
    color: var(--factorio-text);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    background-image: linear-gradient(rgba(0, 0, 0, 0.2) 1px, transparent 1px), linear-gradient(90deg, rgba(0, 0, 0, 0.2) 1px, transparent 1px);
    background-size: 20px 20px;
}

.container {
    max-width: 600px;
    margin: 40px auto;
    padding: 20px;
}

.lang-switcher {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 10;
}

.lang-select {
    appearance: none;
    width: 180px;
    border: 1px solid var(--factorio-border);
    background-color: var(--factorio-dark-alt);
    color: var(--factorio-primary);
    font-family: "FactorioFont", monospace;
    font-size: 11px;
    padding: 8px 10px;
    cursor: pointer;
    text-align: left;
}

.lang-select:hover,
.lang-select:focus-visible {
    border-color: var(--factorio-primary);
    outline: none;
}

.header {
    text-align: center;
    margin-bottom: 30px;
    border-bottom: 3px solid var(--factorio-primary);
    padding-bottom: 20px;
}

.header h1 {
    color: var(--factorio-primary);
    text-shadow: 2px 2px 0 rgba(0, 0, 0, 0.5);
    font-size: 20px;
    margin: 0;
    line-height: 1.5;
}

.calculator-panel {
    background-color: var(--factorio-dark-alt);
    border: 2px solid var(--factorio-border);
    padding: 25px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 10px;
    color: var(--factorio-primary);
    font-size: 12px;
}

.input-field {
    width: 100%;
    padding: 12px;
    background-color: var(--factorio-accent);
    border: 1px solid var(--factorio-border);
    color: var(--factorio-text);
    font-family: "FactorioFont", monospace;
    font-size: 14px;
    outline: none;
    text-align: center;
}

.input-field:focus {
    border-color: var(--factorio-primary);
}

.result-box {
    background-color: var(--factorio-accent);
    border: 1px solid var(--factorio-border);
    padding: 15px;
    margin-top: 20px;
    text-align: center;
}

.result-label {
    font-size: 10px;
    color: var(--factorio-secondary);
    margin-bottom: 5px;
    text-transform: uppercase;
}

.result-value {
    font-size: 24px;
    color: var(--factorio-primary);
}

.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 20px;
}

.stat-item {
    background-color: var(--factorio-accent);
    border: 1px solid var(--factorio-border);
    padding: 10px;
    text-align: center;
}

.stat-label {
    font-size: 8px;
    color: var(--factorio-secondary);
    margin-bottom: 5px;
}

.stat-value {
    font-size: 10px;
    color: #fff;
}

.footer {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
    border-top: 2px solid var(--factorio-primary);
    padding-top: 20px;
    font-size: 10px;
    color: #888888;
}

.footer a {
    color: #e0e0e0;
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
    color: var(--factorio-primary);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.footer-links p {
    margin: 0;
}

input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

input[type="number"] {
    -moz-appearance: textfield;
}